The Seattle Mariners aren’t on that list. But with Seattle being one of the dog-friendliest and dog-lovingest cities around, I’m thinkin’ fans will be howling for their own dog-day at Safeco Field soon enough!

The way it’s been handled in other cities, your dog has to have I.D. tags and proof of vaccinations, and a separate admission ticket (about 30 bucks). Special dog sections have been designated at the stadiums for the promotions.

The sports statistics guy in me is wondering if each pup at the game counts in the final attendance tally. Hey, they bought a ticket!

Billboard at Lankershim and Moorpark in L.A. (PR News Photo/Main Line Animal Rescue)

Ashton Kutcher (7,000,000) and Demi Moore (3,600,000) have over 10 million followers on Twitter between the two of them. That’s a lot of “twefluence” — a massive “twaudience.”

(Yeah, those Twitter plays-on-words are pretty shaky. Back to the “twawing board.”)

So, recognizing the opportunity to reach a lot of people, Mine Line Animal Rescue from Philadelphia has bought a Billboard at the corner of Lankershim and Moorpark in Los Angeles to convince the celebrity couple to tweet to their followers about the plight of dogs being raised in puppy mills in the U.S.

The billboard also includes a website address, www.dogsinacage.com. On that site, MLAR explains a little more fully why they decided to ask Kutcher and Moore for their help.

“Ashton Kutcher & Demi Moore – please Tweet your followers and tell them about puppy mills. Ask them to visit this site or any website explaining the horrors of factory farming man’s best friend. We’re asking you for your help for several reasons 1) because we heard you have five rescued dogs, 2) you are both on the Top Ten list of celebrities on Twitter and have huge followings, and 3) you seem like nice people with strong social consciences and obviously want to make the world a better place.

No tweets (yet) from Ashton or Demi. But word is, if they agree to tweet about puppy mills and the benefits of adopting a shelter pet, MLAR will donate $5,000 to the couple’s foundation, which combats human trafficking.